Improvement in the manufacture of jewelry



S. BOTTLE.

Manufacture of Jewelry.

"N0.133,762. I Patented Dec.10,1872.

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UNITED STATEs PATENT OFFICE.-

SHUBAEL OOTTLE, OF NEW YORK, N. Y.

- IMPROVEMENT IN THE MANUFACTURE OF JEWELRY.

Specification forming part of Letters Patent No. 133,762, dated December 10, 1872.

CASE A.

To all whom it may concern: 1

Be it known that'I, SHUBAEL GOTTLE, of

the city, county, and State of New York, have two pieces, which are soldered together. This soldering can only be hidden from view by a few of the most skilled and accomplished workmen, a'nd is often sought to be concealed by ornamental facings. It becomes, therefore, a matter of importance to make these bases altogether withoutsolder and from a single piece of metal.

Figure 1 is a sectional elevation of male and female dies; Fig. 2, a plan view of die-plate; Fig. 3, side view of lathe-mandrel with die on end; Fig. 4., a plan and section of ring; Fig. 5, a view of burnisher; Fig. 6, a plan view of blank; Fig. 7, a View of blank after the first operation Fig. 8, a longitudinal section of completed article; Fig. 9, a sectional view of completed article on the'mandrel-die and within the ring.

In the drawing, A represents a blank, of suitable form; A, the blank after the first operation and B, the finished article or product.

0 is a die-plate having the female die 0, and D a plunger having the male die 11 on the end.

E is a lathe-mandrel having the annular head e, and F a ring which is used in connection with said mandrel. G is a burnishing-tool. j

Theblank A is placed over and carried down by the male die d into the female die 0. The

eii'ect of this operation is to form a blank with bottom b and upright barrel b but rounded at the corner 0 This blank is then inserted over a head, 0, of the mandrel, while the ring F is placed over the blank. While the blank is held in this position and the mandrel rotated in a lathe, the burnishing-tool is applied to the rounded corners a, and pressed thereupon until the bottom b and barrel 1) are at a sharp angle to each other. The base for the stud or setting is then finished and ready to be used for its intended purpose.

Having thus described my invention, what I claim as new, and'desire to secure by Letters Patent, is-- 1. The combination of the mandrel, ring,

and burnishing-tool, as and for the purpose described.

2. The method of making the base I) b b by first stamping the blank A into the form A and then burnishing the corner 1) until the bottom I) and barrel b are at a sharp angle to each other, as set forth. 7

SHUBAEL GOTTLE.

Witnesses JAJl/EES T. GRAHAM, T. B. MosHEB. 

